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2020 Vol.14, Issue 6 Preview Page

Research Article

Study on Characteristics of Static Pressure Loss and Exhaust Airflow According to Shape of Ventilation Cap for Direct Exhaust System

직배기용 환기캡의 형상에 따른 정압 손실 및 배출 기류 특성에 관한 연구

Chang-Hyun Chyeon1
,
Yu-Ra Son2
,
Ha-Yeong Kum3
,
Jeong-Hoon Yang4†
천 창현1
,
손 유라2
,
금 하영3
,
양 정훈4†
1Ph.D student, Department of Architecture Engineering, Graduate School of Yeungnam University, Gyeongsan, Korea
2Master & Ph.D student, Department of Architecture Engineering, Graduate School of Yeungnam University, Gyeongsan, Korea
3Master student, Department of Architecture Engineering, Graduate School of Yeungnam University, Gyeongsan, Korea
4Professor, School of Architecture, Yeungnam University, Gyeongsan, Korea
1영남대학교 일반대학원 건축학과 박사수료
2영남대학교 일반대학원 건축학과 석·박사통합과정
3영남대학교 일반대학원 건축학과 석사과정
4영남대학교 건축학부 교수
*yangjh@ynu.ac.kr
30 December 2020. pp. 731-743
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Abstract

The purpose of this study is to provide information on static pressure loss and emission airflow characteristics according to the shape of ventilation cap. The static pressure loss by wind velocity of ventilation caps with a diameter of 100 mm was measured by experiment. At wind velocity of 2 m/s, the largest static pressure loss occurred in ventilation cap No. 7 as 251 Pa. In addition, a two-variable correlation analysis showed that variables that are highly correlated with static pressure loss are cap of adverse wind prevention, cap volume, cap open area. CFD was used to identify static pressure loss and airflow characteristics of ventilation caps by diameter. The largest static loss was 75 mm in diameter of cap No. 1 and 150 mm in diameter of cap No. 3. This showed that the open area of the ventilation cap compared to the cross section area of the duct affected the static pressure loss of the ventilation cap.

Keywords
Ventilation caps
Static pressure loss
Loss coefficient
Bicariate correlation analysis
Regression analysis
Computational Fluid Dynamics
키워드
환기캡
정압손실
손실계수
이변량 상관분석
회귀분석
전산유체역학
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Information
  • Publisher :Korean Institute of Architectural Sustainable Environment and Building Systems
  • Publisher(Ko) :한국건축친환경설비학회
  • Journal Title :Journal of Korean Institute of Architectural Sustainable Environment and Building Systems
  • Journal Title(Ko) :한국건축친환경설비학회논문집
  • Volume : 14
  • No :6
  • Pages :731-743
  • Received Date : 2020-11-09
  • Revised Date : 2020-12-14
  • Accepted Date : 2020-11-14
  • DOI :https://doi.org/10.22696/jkiaebs.20200062
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